ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(19), С. 24580 - 24589
Опубликована: Май 6, 2024
The
precise
design
and
synthesis
of
active
sites
to
improve
catalyst's
performance
has
emerged
as
a
promising
tactic
for
electrochemistry.
However,
it
is
challenging
combine
different
types
manipulate
them
simultaneously
at
atomic
resolution.
Here,
we
present
strategy
synthesize
Re
atom-doped
Cu
twin
boundaries
(TBs),
through
pulsed
electrodeposition
boundary
segregation.
Re-doped
TBs
demonstrate
highly
efficient
nitrogen
reduction
reaction
(NRR)
performance.
showed
turnover
frequency
∼5889
s-1,
∼800
times
higher
than
the
pure
TB
centers
(∼7
s-1).
In
addition
"acceptance-donation"
activation
N2
molecules,
theoretical
calculations
also
reveal
that
Re-Re
dimer
on
can
boost
NRR
impede
hydrogen
evolution
synchronously,
rendering
catalysts
with
high
activity
selectivity.
Journal of Alloys and Compounds,
Год журнала:
2024,
Номер
1002, С. 175322 - 175322
Опубликована: Июнь 24, 2024
An
integrated
theoretical-experimental
investigation
is
performed
to
understand
the
photocatalytic
and
optical
properties
of
Ag/SrTiO3
nanocomposite
(Ag/STO).
Theoretical
reveals
that
catalytic
activity
Ag/STO
increased
when
Ag
particle
size
smaller,
while
opposite
correlation
observed
for
its
visible-light
absorbance
efficiency.
These
insights
suggest
efficient
photocatalyst
needs
be
balanced
between
active
interfacial
site
density
intensity
by
carefully
controlling
dosage.
Furthermore,
reactive
oxygen
species
are
responsible
oxidative
degradation
organic
pollutant
on
could
identified
from
Density
Functional
Theory
(DFT)
calculations.
Comprehensive
experiments
carried
out
using
Rhodamine-B
(RhB)
photodegradation
test
in
wastewater
treatment
application
excellently
validate
those
theoretical
predictions.
Over
series
synthesized
composites
with
different
contents,
optimum
1%
wt.
loading
has
highest
92.8%
efficiency
RhB
after
1
hour
light
irradiation.
Trapping
also
confirm
crucial
role
O2
OH
species,
which
was
predicted
DFT
calculations,
as
primary
oxidizing
agents
RhB.
This
work
provides
a
useful
framework
develop
novel
plasmonic
nanocomposites
other
applications.
RSC Advances,
Год журнала:
2024,
Номер
14(5), С. 3489 - 3497
Опубликована: Янв. 1, 2024
Metal
organic
frameworks
(MOFs)
are
attractive
materials
to
generate
multifunctional
catalysts
for
the
electrocatalytic
reduction
of
CO2
hydrocarbons.
Here
we
report
synthesis
Cu
and
Zn
modified
Al-fumarate
(Al-fum)
MOFs,
in
which
promotes
selective
CO
oxygenates
hydrocarbons
an
cascade.
nanoparticles
(NPs)
were
introduced
Al-fum
MOF
by
a
double
solvent
method
promote
in-pore
metal
deposition,
resulting
reduced
Cu-Zn@Al-fum
drop-cast
on
hydrophobic
gas
diffusion
electrode
electrochemical
study.
is
active
electroreduction,
with
loading
influencing
product
yields.
The
highest
faradaic
efficiency
(FE)
62%
achieved
at
-1.0
V
vs.
RHE
conversion
into
CO,
HCOOH,
CH4,
C2H4
C2H5OH,
FE
28%
C2H5OH
pH
6.8.
chemically
robust
matrix
disperse
NPs,
improving
electrocatalyst
lifetime
during
minimizing
transition
aggregation
operation.
npj 2D Materials and Applications,
Год журнала:
2024,
Номер
8(1)
Опубликована: Июнь 8, 2024
Abstract
Carbon-based
perovskite
solar
cells
(c-PSCs)
have
attracted
increasing
attention
due
to
their
numerous
advantages
including
ease
of
fabrication,
the
potential
assembling
flexible
devices,
low
manufacturing
costs
as
well
large-scale
production.
However,
c-PSCs
suffer
from
limited
hole
extraction
and
high
charge
carrier
recombination
inadequate
interface
contact
between
carbon
electrode
film.
Herein,
we
report
fabrication
planar
with
efficiency
excellent
stability
by
employing
electrochemically
produced
large-area
phosphorene
flakes
a
hole-transporting
layer
(HTL).
Large-area
shows
well-aligned
band
energy
levels
perovskite,
thus
led
efficient
reduced
hysteresis
behaviour.
Consequently,
while
exhibiting
under
various
harsh
testing
conditions,
devices
HTL
delivered
power
conversion
over
15%
an
open-circuit
voltage
1.082
V,
which
is
highest
reported
value
for
without
traditional
transporting
materials
date.
Catalysis Science & Technology,
Год журнала:
2023,
Номер
13(23), С. 6764 - 6779
Опубликована: Янв. 1, 2023
An
integrated
theoretical
and
experimental
investigation
reveals
how
the
presence
of
water
alters
activity
metal
oxide
catalysts
in
gas-phase
activation
conversion
methane.
Abstract
Transitioning
from
fossil
fuels
to
renewable
energy
sources
is
demanded
due
the
gradual
depletion
of
petroleum
oil/gas
and
environmental
impact
carbon
dioxide
(CO
2
)
emissions
into
atmosphere.
Electrocatalytic
photocatalytic
CO
reduction
methane
(CH
4
using
crucial
for
sustainable
chemical/fuel
production
greenhouse
gas
reduction.
In
recent
years,
extensive
research
has
focused
on
understanding
fundamental
aspects
two
approaches,
such
as
reaction
mechanisms
active
sites,
exploring/designing
novel
catalytic
materials.
This
review
initially
discusses
fundamentals,
including
performance
evaluation
indexes,
reactors,
mechanisms,
understand
reactions.
Subsequently,
various
catalyst
preparation
strategies
characterization
methods
are
summarized,
trying
outline
design
principle
based
obtained
mechanisms.
Finally,
challenges
perspectives
future
development
in
this
area
discussed
presented.
It
expected
provide
a
comprehensive
photo/electrocatalytic
methanation,
valuable
knowledge
novice
researchers,
helpful
reference
endeavors.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(13), С. 16186 - 16202
Опубликована: Март 22, 2024
The
efficient
and
economic
conversion
of
CO2
renewable
H2
into
methanol
has
received
intensive
attention
due
to
growing
concern
for
anthropogenic
emissions,
particularly
from
fossil
fuel
combustion.
Herein,
we
have
developed
a
novel
method
preparing
Ni/In2O3
nanocatalysts
by
using
porous
MIL-68(In)
nickel(II)
acetylacetonate
(Ni(acac)2)
as
the
dual
precursors
In2O3
Ni
components,
respectively.
Combined
with
in-depth
characterization
analysis,
it
was
revealed
that
utilization
favored
good
distribution
nanoparticles
(∼6.2
nm)
on
support
inhibited
metal
sintering
at
high
temperatures.
varied
catalyst
fabrication
parameters
were
explored,
indicating
designed
(Ni
content
5
wt
%)
exhibited
better
catalytic
performance
than
compared
prepared
In(OH)3
precursor
In2O3.
obtained
also
showed
excellent
durability
in
long-term
tests
(120
h).
However,
loading
(31
would
result
formation
Ni-In
alloy
phase
during
hydrogenation
which
CO
selectivity
69%.
This
phenomenon
is
more
obvious
if
had
strong
interaction,
depending
methods.
In
addition,
aid
situ
diffuse
reflectance
infrared
Fourier
transform
spectroscopy
density
functional
theory
(DFT)
calculations,
predominantly
follows
formate
pathway
methanol,
HCOO*
*H3CO
major
intermediates,
while
small
size
particles
beneficial
species
based
DFT
calculation.
study
suggests
nanocatalyst
fabricated
metal–organic
frameworks
can
effectively
promote
thermal
methanol.
Advanced Materials,
Год журнала:
2024,
Номер
36(28)
Опубликована: Апрель 17, 2024
Transition
metal
oxides
(TMOs)
are
widely
studied
for
loading
of
various
catalysts
due
to
their
low
cost
and
high
structure
flexibility.
However,
the
prevailing
close-packed
nature
most
TMOs
crystals
has
restricted
available
sites
surface
only,
while
internal
bulk
lattice
remains
unactuated
inaccessible
narrow
space
that
blocks
out
key
reactants
and/or
particulate
catalysts.
Herein,
using
tunnel-structured
MnO
